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%I #13 Jun 30 2021 01:55:24
%S 12,28,84,102,108,110,112,113,114,115,116,120,129,138,147,156,174,190,
%T 244,252,254,256,257,258,259,260,262,280,289,298,307,316,336,352,417,
%U 433,498,514,579,595,660,676,732,750,756,758,760,761,762,763,764,768
%N Numbers whose base-9 representation has the same nonzero number of 1's and 3's.
%t Select[Range[800],DigitCount[#,9,1]==DigitCount[#,9,3]>0&] (* _Harvey P. Dale_, Aug 03 2017 *)
%Y Cf. A007095.
%K nonn,base,easy
%O 1,1
%A _Olivier GĂ©rard_